Due to some strange reason ZendStudio (Eclipse in general i think) have a bug when running under Linux, with the mouse click... yeah,yea... you can't click sh1t! #EpicFail
Here my solution:
Create a new file: Zend.sh
#!/bin/sh
export GDK_NATIVE_WINDOWS=1
/path/toZend/Install/ZendStudio
Now, run ZS from that script.... pure win. "Or be like me... stick with Netbeans". God, why Zend had to merge with this Eclipse bs.